What is the current water temperature in Holyhead?

Q: What is the current water temperature in Holyhead?

As of now, in Holyhead, the water temperature is 8.05°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United Kingdom > Holyhead

Water temperature in Holyhead

Detailed information about the current water temperature in Holyhead. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

46.5

°F

February 25, 17:29

Trend:

increasing

Yesterday:

46.5°F

Tomorrow:

46.6°F

Sunrise:

07:16

Sunset:

17:48

Day Length:

10 h. 32 min.

Holyhead in March

Minimum:

48.2°F

Average:

49.5°F

Maximum:

50.8°F

Sea water temperature in Holyhead today

As of now, in Holyhead, the water temperature is 46.5°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is about the same as the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 47.6°F on 2024, while the historical minimum was 44.7°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 46.2°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Holyhead

Date	Current Year actual* / forecast**	last year	10 years average
Feb 11	46.5°F	46.1°F	46.7°F
Feb 12	46.4°F	45.5°F	46.5°F
Feb 13	46.5°F	45.6°F	46.5°F
Feb 14	46.5°F	45.8°F	46.4°F
Feb 15	46.4°F	45.9°F	46.4°F
Feb 16	46.2°F	45.6°F	46.4°F
Feb 17	46.7°F	45.4°F	46.2°F
Feb 18	47.0°F	45.5°F	46.2°F
Feb 19	46.7°F	45.5°F	46.3°F
Feb 20	46.8°F	46.1°F	46.5°F
Feb 21	47.3°F	46.5°F	46.6°F
Feb 22	47.1°F	46.0°F	46.7°F
Feb 23	47.0°F	46.6°F	46.8°F
Feb 24	46.5°F	46.4°F	46.7°F
Feb 25	46.5°F	46.9°F	46.6°F
Feb 26	46.6°F	47.2°F	46.7°F
Feb 27	46.6°F	46.8°F	46.7°F
Feb 28	46.3°F	47.1°F	46.4°F
Mar 1	46.2°F	47.0°F	46.4°F
Mar 2	46.1°F	46.5°F	46.3°F
Mar 3	46.0°F	46.6°F	46.2°F
Mar 4	46.0°F	47.0°F	46.2°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Holyhead by month

In an average year, Holyhead offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Holyhead was recorded on August 29, 2025, reaching a 63.3°F. While the coldest temperature occurred on March 9, 2018, dipping to 43.0°F. The average readings by season are 48.6°F in Winter, 48.6°F in Spring, 58.2°F in Summer, and 57.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	45.8°F	19mi
Bangor	45.7°F	21mi
Conwy	45.4°F	33mi
Douglas	46.0°F	59mi
Aberystwyth	46.8°F	66mi

* current water temperature in this city

** straight line distance from Holyhead